CN103277360A - Electromagnetic hydraulic combined control valve - Google Patents
Electromagnetic hydraulic combined control valve Download PDFInfo
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- CN103277360A CN103277360A CN2013102507603A CN201310250760A CN103277360A CN 103277360 A CN103277360 A CN 103277360A CN 2013102507603 A CN2013102507603 A CN 2013102507603A CN 201310250760 A CN201310250760 A CN 201310250760A CN 103277360 A CN103277360 A CN 103277360A
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- valve
- control valve
- oil circuit
- inching
- combined control
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Abstract
The invention relates to an electromagnetic hydraulic combined control valve. The electromagnetic hydraulic combined control valve comprises a valve body and a magnetic exchange valve; a cushion valve, a constant pressure valve and an inching valve are arranged inside the valve body in a parallel and concentrate mode; the cushion valve is capable of respectively performing buffering on a forward gear and a backward gear; the magnetic exchange valve is installed on the valve body; a main oil circuit is connected into an oil circuit input port sequentially through the inching valve and the cushion valve; and in the main oil circuit, the constant pressure valve is arranged on one side of an oil circuit inlet end of the inching valve. The electromagnetic hydraulic combined control valve has the advantage of being convenient to overhaul due to the facts that the oil circuit is simple and the control valve size is reduced by one third.
Description
Technical field
The present invention relates to a kind of electromagnetism fluid power combined control valve, say so more specifically for the control valve of fork truck.
Background technique
The control valve that uses on the fork truck is many at present is made up of valve body, housing and solenoid directional control valve three parts, two trimmer valves and a pressure fixing valve are installed in the valve body, this structure oil circuit arranges complexity, trouble is installed, when breaking down, owing to be composite structure, need take apart and could determine the place of breaking down, it is very inconvenient to repair, and bulky, has taken big quantity space.
Summary of the invention
The present invention is directed to the deficiency that above-mentioned existing issue exists, provide a kind of simple in structure, oil circuit is simple, and volume is less, the electromagnetism fluid power combined control valve that is easy to install and maintain.
The present invention is by the following technical solutions: a kind of electromagnetism fluid power combined control valve, comprise valve body and solenoid directional control valve, concentrate side by side in the described valve body to be provided with one and to be merely able to advancing gear and retreat trimmer valve, a pressure fixing valve and inching valve that gear cushions respectively, described solenoid directional control valve is installed on the valve body.
Oil circuit is set to: working connection inserts the oil circuit input port of described solenoid directional control valve successively by inching valve and trimmer valve, and in described working connection, oil circuit entry end one side of inching valve is provided with pressure fixing valve.
Further, described pressure fixing valve comprises piston and pressure adjusting spring, has hydraulic fluid port at the pressure fixing valve middle part, and when piston compression spring, when moving to the hydraulic fluid port position, oil pressure can pass through the hydraulic fluid port off-load.
Further, described trimmer valve comprises that the buffering valve pocket is gentle to the valve inner spring, and described buffering valve pocket is the hollow cylindrical structures of an end opening.
Further, described inching valve comprises fine motion valve rod, guiding valve and counterbalance spring, and described counterbalance spring can promote the direction that guiding valve extracts out towards the fine motion valve rod and move.
The invention has the advantages that:
1, changed the forward gears oil circuit of solenoid directional control valve in the original structure and retreat the structural type that grade oil circuit arranges trimmer valve respectively, use a trimmer valve to cushion, and focused on pressure fixing valve, inching valve and trimmer valve on the valve body together, saved the space greatly, the The whole control valve body is long-pending to dwindle 1/3, and more convenient maintenance.
2, adopted the oil circuit setting that cooperates existing integrated morphology, simple in structure.
3, adopt the pressure fixing valve of brand new, can regulate the pressure of whole oil circuit easily.
4, adopted the trimmer valve of brand new, hollow structure inside can reduce accessory weight, saves cost.
5, adopt the inching valve of brand new, by guiding valve and counterbalance spring are set, played the effect of the whole oil circuit pressure of slow reduction.
Description of drawings
Fig. 1 is overall structure schematic representation of the present invention;
Fig. 2 is oil-way system schematic representation of the present invention.
Number in the figure: 1. valve body, 2. solenoid directional control valve, 3. trimmer valve, 4. pressure fixing valve, 5. inching valve, 6. buffering valve pocket, 7. trimmer valve inner spring, 8. fine motion valve rod, 9. guiding valve, 10. counterbalance spring, 11. working connections, 12. filter, 13. stop unloading ports, 14. pistons, 15. pressure adjusting springs, 16. hydraulic fluid ports.
Embodiment
The invention will be further described in conjunction with specific embodiments with reference to the accompanying drawings.See also Fig. 1 and Fig. 2, electromagnetism fluid power combined control valve of the present invention, comprise valve body 1 and solenoid directional control valve 2, concentrate side by side in the described valve body 1 to be provided with one and to be merely able to advancing gear and retreat trimmer valve 3, a pressure fixing valve 4 and inching valve 5 that gear cushions respectively, described solenoid directional control valve 2 is installed on the valve body 1.Oil circuit is set to: working connection 11 inserts the oil circuit input port of described solenoid directional control valve 2 successively by inching valve 5, trimmer valve 3 and filter 12, in described working connection 11, oil circuit entry end one side of inching valve 5 is provided with pressure fixing valve 4.This structure arranges trimmer valve, pressure fixing valve and inching valve by concentrating, and makes the overall volume of control valve dwindle 1/3, because oil circuit is arranged on the valve body, is more conducive to overhaul in addition.
In the present embodiment, trimmer valve 3 comprises buffering valve pocket 6 and trimmer valve inner spring 7, and described buffering valve pocket 6 is the hollow cylindrical structures of an end opening.When solenoid directional control valve switches when advancing gear and retreating gear, trimmer valve cover compression trimmer valve inner spring, the pressure of whole oil circuit slowly changes, and can not produce vehicle and impact.
In the present embodiment, inching valve 5 comprises fine motion valve rod 8, guiding valve 9 and counterbalance spring 10, described counterbalance spring 10 can promote the direction that guiding valve 9 extracts out towards fine motion valve rod 8 and move, when fork truck need stop to travel, the driver need step on inching valve and brake, and fine motion this moment valve rod 8 is outwards extracted out, most of oil pressure of oil circuit will draw off from the stop unloading port 13 of inching valve 5, it is outwards mobile that counterbalance spring 10 can promote guiding valve 9 at this moment, makes oil pressure slowly descend, and finishes the work of oil pressure off-load.
In the present embodiment, pressure fixing valve 4 comprises piston 14 and pressure adjusting spring 15, has hydraulic fluid port 16 at pressure fixing valve 4 middle parts, when pressure in the oil circuit surpasses the setting value of pressure adjusting spring, piston 14 compression springs expose hydraulic fluid port 16, and the oil pressure in the working connection remains at constant numerical value by hydraulic fluid port 16 off-loads.
The above embodiment has only expressed one embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as limitation of the scope of the invention.Should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, therefore, protection scope of the present invention should be as the criterion with appended claim.
Claims (4)
1. electromagnetism fluid power combined control valve, comprise valve body and solenoid directional control valve, it is characterized in that concentrating side by side in the described valve body being provided with one and being merely able to advancing gear and retreat trimmer valve, a pressure fixing valve and inching valve that gear cushions respectively, described solenoid directional control valve is installed on the valve body; Oil circuit is set to: working connection inserts the oil circuit input port of described solenoid directional control valve successively by inching valve and trimmer valve, and in described working connection, oil circuit entry end one side of inching valve is provided with pressure fixing valve.
2. a kind of electromagnetism fluid power combined control valve as claimed in claim 1 is characterized in that described trimmer valve comprises that the buffering valve pocket is gentle to the valve inner spring, and described buffering valve pocket is the hollow cylindrical structures of an end opening.
3. a kind of electromagnetism fluid power combined control valve as claimed in claim 1 or 2 is characterized in that described inching valve comprises fine motion valve rod, guiding valve and counterbalance spring, and described counterbalance spring can promote the direction that guiding valve extracts out towards the fine motion valve rod and move.
4. a kind of electromagnetism fluid power combined control valve as claimed in claim 3 is characterized in that described pressure fixing valve comprises piston and pressure adjusting spring, has hydraulic fluid port at the pressure fixing valve middle part, and when piston compression spring, when moving to the hydraulic fluid port position, oil pressure can pass through the hydraulic fluid port off-load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102507603A CN103277360A (en) | 2013-06-21 | 2013-06-21 | Electromagnetic hydraulic combined control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102507603A CN103277360A (en) | 2013-06-21 | 2013-06-21 | Electromagnetic hydraulic combined control valve |
Publications (1)
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|---|---|
| CN103277360A true CN103277360A (en) | 2013-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2013102507603A Pending CN103277360A (en) | 2013-06-21 | 2013-06-21 | Electromagnetic hydraulic combined control valve |
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| CN (1) | CN103277360A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561356A (en) * | 2017-12-29 | 2018-09-21 | 杭州前进齿轮箱集团股份有限公司 | A kind of used with tractor commutation hydraulic device |
| CN109505816A (en) * | 2018-11-28 | 2019-03-22 | 合肥今典机械科技有限公司 | A kind of electro-hydraulic manipulation valve of light-duty agriculture vehice |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0462080A1 (en) * | 1990-06-15 | 1991-12-18 | GRAZIANO TRASMISSIONI S.p.A. | An inching valve for power-shift transmissions, particularly for lift trucks |
| CN2611658Y (en) * | 2003-04-04 | 2004-04-14 | 合肥天力汽车油泵有限责任公司 | Electromagnetic control valve for fork truck |
| CN201415932Y (en) * | 2009-06-24 | 2010-03-03 | 合肥力威汽车油泵有限公司 | Housing of fork truck control valve |
| CN201606326U (en) * | 2009-12-31 | 2010-10-13 | 安徽蓝博旺机械有限责任公司 | Electro-hydraulic inching valve |
| CN101893010A (en) * | 2009-05-21 | 2010-11-24 | 上海立新液压有限公司 | Hydraulic balanced valve |
| CN201825698U (en) * | 2010-10-20 | 2011-05-11 | 浙江海宏液压科技股份有限公司 | Improved forklift EHC (electrohydraulic control) variable speed control valve |
| CN202251195U (en) * | 2011-10-17 | 2012-05-30 | 合肥力威汽车油泵有限公司 | Single-point compensation electromagnetic hydraulic combined control valve |
| CN202302022U (en) * | 2011-10-28 | 2012-07-04 | 合肥力威汽车油泵有限公司 | Inching valve of hydraulic transmission box |
| CN203335507U (en) * | 2013-06-21 | 2013-12-11 | 合肥力威汽车油泵有限公司 | Electromagnetism and fluid power combination control valve |
-
2013
- 2013-06-21 CN CN2013102507603A patent/CN103277360A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0462080A1 (en) * | 1990-06-15 | 1991-12-18 | GRAZIANO TRASMISSIONI S.p.A. | An inching valve for power-shift transmissions, particularly for lift trucks |
| CN2611658Y (en) * | 2003-04-04 | 2004-04-14 | 合肥天力汽车油泵有限责任公司 | Electromagnetic control valve for fork truck |
| CN101893010A (en) * | 2009-05-21 | 2010-11-24 | 上海立新液压有限公司 | Hydraulic balanced valve |
| CN201415932Y (en) * | 2009-06-24 | 2010-03-03 | 合肥力威汽车油泵有限公司 | Housing of fork truck control valve |
| CN201606326U (en) * | 2009-12-31 | 2010-10-13 | 安徽蓝博旺机械有限责任公司 | Electro-hydraulic inching valve |
| CN201825698U (en) * | 2010-10-20 | 2011-05-11 | 浙江海宏液压科技股份有限公司 | Improved forklift EHC (electrohydraulic control) variable speed control valve |
| CN202251195U (en) * | 2011-10-17 | 2012-05-30 | 合肥力威汽车油泵有限公司 | Single-point compensation electromagnetic hydraulic combined control valve |
| CN202302022U (en) * | 2011-10-28 | 2012-07-04 | 合肥力威汽车油泵有限公司 | Inching valve of hydraulic transmission box |
| CN203335507U (en) * | 2013-06-21 | 2013-12-11 | 合肥力威汽车油泵有限公司 | Electromagnetism and fluid power combination control valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561356A (en) * | 2017-12-29 | 2018-09-21 | 杭州前进齿轮箱集团股份有限公司 | A kind of used with tractor commutation hydraulic device |
| CN109505816A (en) * | 2018-11-28 | 2019-03-22 | 合肥今典机械科技有限公司 | A kind of electro-hydraulic manipulation valve of light-duty agriculture vehice |
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Application publication date: 20130904 |